Equity [Abstract] Net income Net Income (Loss) Attributable to Parent Income available to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Weighted average shares outstanding Weighted Average Number of Shares Outstanding, Basic Net income per common share (in dollars per share) Earnings Per Share, Basic Effect of dilutive stock options and warrants Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Weighted average shares of common stock and common stock equivalents Weighted Average Number of Shares Outstanding, Diluted Net income per diluted common share (in dollars per share) Earnings Per Share, Diluted Antidilutive options and warrants excluded from computation of earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Property, Plant and Equipment [Abstract] Schedule of bank premises and equipment Property, Plant and Equipment [Table Text Block] 2018 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Finite-Lived Intangible Assets, Net Income Statement [Abstract] Interest income: Interest and Dividend Income, Operating [Abstract] Interest and fees on loans Interest and Fee Income, Loans and Leases Interest on deposits in other banks Interest Income, Deposits with Financial Institutions Interest and dividends on investment securities: Interest and Dividend Income, Securities, by Taxable Status [Abstract] Taxable Interest Income, Securities, Operating, Taxable Exempt from Federal income taxes Interest Income, Securities, Operating, Tax Exempt Total interest income Interest and Dividend Income, Operating Interest expense: Interest Expense [Abstract] Interest on deposits Interest Expense, Domestic Deposits Interest on junior subordinated deferrable interest debentures Interest Expense, Junior Subordinated Debentures Other Interest Expense, Other Total interest expense Interest Expense Net interest income before provision for credit losses Interest Income (Expense), Net (Reversal of) Provision for credit losses Provision for Loan and Lease Losses Net interest income after provision for credit losses Interest Income (Expense), after Provision for Loan Loss Non-interest income: Noninterest Income [Abstract] Service charges Fees and Commissions Appreciation in cash surrender value of bank owned life insurance Bank Owned Life Insurance Income Interchange fees Fees and Commissions, Credit and Debit Cards Loan placement fees Loan Placement Fees This element relates to loan placement fee income which is earned from the brokerage of single-family residential mortgage loans. Net realized gains on sales and calls of investment securities Gain (Loss) on Sale of Securities, Net Other-than-temporary impairment loss on investment securities Other than Temporary Impairment Losses, Investments Federal Home Loan Bank dividends Dividends Federal Home Loan Bank Stocks This element represents the amount of dividend income recognized during the period from stock owned in Federal Home Loan Bank. Other income Noninterest Income, Other Operating Income Total non-interest income Noninterest Income Non-interest expenses: Noninterest Expense [Abstract] Salaries and employee benefits Labor and Related Expense Occupancy and equipment Occupancy, Net Regulatory assessments Regulatory Assessments This element represents the expenses incurred which relate to assessments by regulatory authorities. Data processing expense Information Technology and Data Processing Professional services Professional Fees ATM/Debit card expenses ATM and Debit Card Expenses ATM and Debit Card Expenses License & maintenance contracts License and Maintenance Contract Costs License and Maintenance Contract Costs Directors’ expenses Directors' Expenses Directors' Expenses Advertising Advertising Expense Internet banking expenses Internet Banking Expense Internet Banking Expense Acquisition and integration expenses Business Combination, Acquisition Related Costs Amortization of core deposit intangibles Amortization of Intangible Assets Other expense Other Noninterest Expense Total non-interest expenses Noninterest Expense Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income available to common shareholders Net income per common share: Earnings Per Share [Abstract] Basic earnings per common share (in dollars per share) Diluted earnings per common share (in dollars per share) Cash dividends per common share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Loans and Leases Receivable Disclosure [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Commercial Commercial Portfolio Segment [Member] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Axis] Class of Financing Receivable, Type [Domain] Class of Financing Receivable, Type [Domain] Purchased Credit Impaired Loans Purchased Credit Impaired Loans [Member] Purchased Credit Impaired Loans [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Contractually required payments receivable on PCI loans at acquisition: Impaired Financing Receivable, Unpaid Principal Balance Cash flows expected to be collected at acquisition Impaired Financing Receivable, with Related Allowance, Recorded Investment Purchased credit impaired loans Impaired Financing Receivable, Recorded Investment Related Allowance Impaired Financing Receivable, Related Allowance Fair value of acquired loans at acquisition Financing Receivable, Significant Purchases Business Combinations [Abstract] Acquisitions Business Combination Disclosure [Text Block] Income Tax Disclosure [Abstract] Components of income tax expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Components of deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Reconciliation of effective tax rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Rollforward of unrecognized tax benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Central Valley Community Bancorp and Subsidiary Reportable Legal Entities [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Central Valley Community Bank Subsidiaries [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Tier 1 Leverage Ratio Tier One Leverage Capital [Abstract] Tier One Leverage Capital Tier One Leverage Capital Tier One Leverage Capital to Average Assets Tier One Leverage Capital to Average Assets Tier One Leverage Capital Required for Capital Adequacy Tier One Leverage Capital Required for Capital Adequacy Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier One Leverage Capital Required for Capital Adequacy to Average Assets Tier 1 Common Equity Ratio Common Equity Tier One Ratio [Abstract] Common Equity Tier One Ratio [Abstract] Tier One Common Equity Tier One Common Equity Tier One Common Equity Tier One Common Equity to Average Assets Tier One Common Equity to Average Assets Tier One Common Equity to Average Assets Tier One Common Equity Required for Capital Adequacy Tier One Common Equity Required for Capital Adequacy Tier One Common Equity Required for Capital Adequacy Tier One Common Equity Required for Capital Adequacy to Average Assets Tier One Common Equity Required for Capital Adequacy to Average Assets Tier One Common Equity Required for Capital Adequacy to Average Assets Tier 1 Risk-Based Capital Ratio Tier One Risk Based Capital [Abstract] Tier One Risk Based Capital Tier One Risk Based Capital Tier One Risk Based Capital to Risk Weighted Assets Tier One Risk Based Capital to Risk Weighted Assets Tier One Risk Based Capital Required for Capital Adequacy Tier One Risk Based Capital Required for Capital Adequacy Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets Total Risk-Based Capital Ratio Capital [Abstract] Capital Capital Capital to Risk Weighted Assets Capital to Risk Weighted Assets Capital Required for Capital Adequacy Capital Required for Capital Adequacy Capital Required for Capital Adequacy to Risk Weighted Assets Capital Required for Capital Adequacy to Risk Weighted Assets Investments, Debt and Equity Securities [Abstract] Investment securities Available-for-sale Securities Disclosure [Text Block] Disclosure of available-for-sale securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. Schedule of Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Pro Forma Results of Operations Business Acquisition, Pro Forma Information [Table Text Block] Accounting Policies [Abstract] General Business Description and Basis of Presentation [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Investment Securities Investment, Policy [Policy Text Block] Loans and Acquired Loans and Leases Finance, Loans and Leases Receivable, Policy [Policy Text Block] Allowance for Credit Losses Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block] Bank Premises and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Federal Home Loan Bank (FHLB) Stock Federal Home Loan Bank Stock Policy [Policy Text Block] Federal Home Loan Bank Stock Policy [Policy Text Block] Investments in Low Income Housing Tax Credit Funds Investments in Low Income Housing Tax Credit Funds, Policy [Policy Text Block] Investments in Low Income Housing Tax Credit Funds, Policy [Policy Text Block] Other Real Estate Owned Loans and Leases Receivable, Real Estate Acquired Through Foreclosure, Policy [Policy Text Block] Foreclosed Assets Finance, Loan and Lease Receivables, Held for Investments, Foreclosed Assets Policy [Policy Text Block] Bank Owned Life Insurance Bank Owned Life Insurance Policy [Policy Text Block] Bank Owned Life Insurance Policy [Policy Text Block] Business Combinations Business Combinations Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Loan Commitments and Related Financial Instruments Loan Commitments, Policy [Policy Text Block] Income Taxes and Accounting for Uncertainty in Income Taxes Income Tax, Policy [Policy Text Block] Retirement Plans Pension and Other Postretirement Plans, Policy [Policy Text Block] Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Loss Contingencies Commitments and Contingencies, Policy [Policy Text Block] Restrictions on Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Share-Based Compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Dividend Restriction Dividends, Policy [Policy Text Block] Dividends, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value Measurement, Policy [Policy Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Available-for-Sale Securities Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract] Proceeds from sales or calls Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds Gross realized gains from sales or calls Available-for-sale Securities, Gross Realized Gains Gross realized losses from sales or calls Available-for-sale Securities, Gross Realized Losses Available-for-sale securities reconciliation Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Securities in a continuous unrealized loss position Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block] Realized gains and losses Schedule of Realized Gain (Loss) [Table Text Block] Credit losses recorded in earnings Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block] Investments by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Goodwill [Roll Forward] Goodwill [Roll Forward] Beginning of year Goodwill Acquired goodwill Goodwill, Acquired During Period Impairment Goodwill, Impairment Loss End of year Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] U.S. Government agencies US Government Agencies Debt Securities [Member] Obligations of states and political subdivisions US States and Political Subdivisions Debt Securities [Member] U.S. Government sponsored entities and agencies collateralized by residential mortgage obligations Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] Private label residential mortgage and asset backed securities Mortgage-backed Securities, Issued by Private Enterprises [Member] Duration of Loss [Axis] Duration of Loss [Axis] Duration of Loss [Axis] Duration of Loss [Domain] Duration of Loss [Domain] Duration of Loss [Domain] Less than 12 months Less Than Twelve Months [Member] Less Than Twelve Months [Member] Greater than 12 months Greater Than Twelve Months [Member] Greater Than Twelve Months [Member] External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Axis] External Credit Rating by Grouping [Domain] External Credit Rating by Grouping [Domain] External Credit Rating, Non Investment Grade [Member] External Credit Rating, Non Investment Grade [Member] Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Domain] Investments [Domain] Securities Pledged as Collateral Securities Pledged as Collateral [Member] Schedule of Available-for-sale Securities Schedule of Available-for-sale Securities [Line Items] Unrealized gain (loss) on available for sale portfolio Available-for-sale Securities, Accumulated Gross Unrealized Gain (Loss), before Tax Tax liabilities (benefits) associated with available-for-sale portfolio Accumulated Other Comprehensive Income Available For Sale Securities Adjustment Tax Accumulated Other Comprehensive Income Available For Sale Securities Adjustment Tax Transfer of securities from available-for-sale to held-to-maturity Available-for-sale Securities, Transfers to Held-to-maturity Available-for-sale Securities, Transfers to Held-to-maturity HTM transfers to AFS securities, fair value Held-to-maturity Securities Transfers to Available-for-sale Securities Held-to-maturity Securities Transfers to Available-for-sale Securities Transfers to held-to-maturity, fair value Available-for-sale Securities, Transfers to Held-to-maturity, Fair Value Available-for-sale Securities, Transfers to Held-to-maturity, Fair Value Unrealized gain (loss) on transfer of securities from available-for-sale to held-to-maturity Available-for-sale Securities, Transferred to Held-to-maturity Securities, Unrealized Gain (Loss) Available-for-sale Securities, Transferred to Held-to-maturity Securities, Unrealized Gain (Loss) HTM, number of securities sold Held-to-maturity Securities, Number of Securities Sold Held-to-maturity Securities, Number of Securities Sold Number of securities sold Investments, Number of Securities Sold Investments, Number of Securities Sold Book Value of HTM securities sold Held-to-maturity Securities, Sold Security, at Carrying Value Gross realized gains from sales or calls Held-to-maturity Securities, Sold Security, Realized Gain (Loss) Remaining unaccreted balance of HTM securities Accumulated Other Comprehensive Income (Loss), Available for Sale Securities Transferred to Held to Maturity, Unaccreted Balance Accumulated Other Comprehensive Income (Loss), Available for Sale Securities Transferred to Held to Maturity, Unaccreted Balance Income tax impact from the reclassification of unrealized net gains on available-for-sale securities to Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Threshold Period of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Threshold Period of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Threshold Period of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Threshold Percentage of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Threshold Percentage of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Threshold Percentage of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Threshold Amount of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Threshold Amount of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Threshold Amount of Value Decline in Available-for-sale Securities to be considered Other than Temporary Impairment Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, before Tax, Including Portion Attributable to Noncontrolling Interest, Available-for-sale Securities Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Number of Impaired Securities Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Number of Impaired Securities Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Number of Impaired Securities Available-for-sale Securities, Other than Temporary Impaired Security Available-for-sale Securities, Other than Temporary Impaired Security Available-for-sale Securities, Other than Temporary Impaired Security Available-for-sale Debt Securities, Other than Temporary Impairment Security, Amortized Cost Basis Available-for-sale Debt Securities, Other than Temporary Impairment Security, Amortized Cost Basis Available-for-sale Debt Securities, Other than Temporary Impairment Security, Amortized Cost Basis Other than temporary impairment losses on investment securities Available-for-sale Securities, Number of Positions Available-for-sale Securities, Number of Positions Available-for-sale Securities, Number of Positions Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Debt securities, amortized cost Available-for-sale Debt Securities, Amortized Cost Basis Available-for-sale investment securities, Amortized cost Available-for-sale Securities, Amortized Cost Basis Available-for-sale Securities Pledged as Collateral Available-for-sale Securities Pledged as Collateral Share-based Compensation [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2005 Plan Central Valley Community Bancorp Two Thousand Five Omnibus Incentive Plan [Member] Central Valley Community Bancorp Two Thousand Five Omnibus Incentive Plan [Member] 2015 Plan Central Valley Community Bancorp Two Thousand Fifteen Omnibus Incentive Plan [Member] Central Valley Community Bancorp Two Thousand Fifteen Omnibus Incentive Plan [Member] ESPP Employee Stock Purchase Plan (ESPP) [Member] Employee Stock Purchase Plan (ESPP) [Member] 2007 Plan Folsom Lake Bank 2007 Equity Incentive Plan (2007 Plan) [Member] Folsom Lake Bank 2007 Equity Incentive Plan (2007 Plan) [Member] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Stock Options Employee Stock Option [Member] Restricted Stock Restricted Stock [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Tranche one Share-based Compensation Award, Tranche One [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Number of shares authorized under plan Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Award expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Number of shares reserved for issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Payroll deductions Employee Stock Purchase Plan (ESPP), Payroll Deductions Employee Stock Purchase Plan (ESPP), Payroll Deductions Discount from market price Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date Reserved for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Share-based compensation expense Allocated Share-based Compensation Expense Tax benefit of stock option compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Proceeds from exercise of stock options Proceeds from Stock Options Exercised Excess tax benefit realized for option exercises Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options Unrecognized compensation cost related to non-vested share-based compensation arrangements Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Total fair value of options vested in period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Award vesting percent Share- Based Compensation Arrangement By Share-Based Payment Award,Equity Instruments Other Than Options, Award Vesting Percent Share- Based Compensation Arrangement By Share-Based Payment Award,Equity Instruments Other Than Options, Award Vesting Percent Number of options nonvested and expected to vest (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Other than Options, Nonvested and Expected to Vest, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Other than Options, Nonvested and Expected to Vest, Exercisable, Number Equity instruments other than options weighted average remaining period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) (Net of Taxes) AOCI Attributable to Parent [Member] Statement [Line Items] Statement [Line Items] Balance Stockholders' Equity Attributable to Parent Balance (in shares) Shares, Outstanding Other comprehensive income Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Reclassification associated with the adoption of ASU 2018-02 Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect Cash dividend Dividends, Common Stock, Cash Stock issued for acquisition (in shares) Stock Issued During Period, Shares, Acquisitions Stock issued for acquisition Stock Issued During Period, Value, Acquisitions Stock-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Restricted stock granted, (forfeited) and related tax benefit (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock granted, (forfeited) and related tax benefit Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Stock issued under employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Stock issued under employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Stock options exercised and related tax benefit (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock options exercised and related tax benefit Stock Issued During Period, Value, Stock Options Exercised Balance Balance (in shares) Fair Value Disclosures [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Cash and due from banks Cash and Due From Banks, Fair Value Disclosure Cash and Due From Banks, Fair Value Disclosure Interest-earning deposits in other banks Interest-earning Deposits in Other Banks, Fair Value Disclosure Interest-earning Deposits in Other Banks, Fair Value Disclosure Federal funds sold Federal Funds Sold, Fair Value Disclosure Federal Funds Sold, Fair Value Disclosure Available-for-sale investment securities Available-for-sale Securities Held-to-maturity investment securities (Fair value of $0 at xxx) Held-to-maturity Securities Loans receivable Loans Receivable, Fair Value Disclosure Federal Home Loan Bank stock Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Accrued interest receivable Accrued Interest Receivable, Fair Value Disclosure Accrued Interest Receivable, Fair Value Disclosure Financial liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Deposits Deposits, Fair Value Disclosure Short-term borrowings Federal Home Loan Bank Borrowings, Fair Value Disclosure Junior subordinated deferrable interest debentures Subordinated Debt Obligations, Fair Value Disclosure Accrued interest payable Accrued Interest Payable, Fair Value Disclosure Accrued Interest Payable, Fair Value Disclosure Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] Beginning balance of credit losses recognized Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held Amounts related to credit loss for which an OTTI charge was not previously recognized Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment Realized losses for securities sold Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold Ending balance of credit losses recognized Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Folsom Lake Bank Folsom Lake Bank [Member] Folsom Lake Bank [Member] Sierra Vista Bank Sierra Vista Bank [Member] Sierra Vista Bank [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Folsom, California [Member] Folsom, California [Member] Folsom, California [Member] Fair Oaks, California [Member] Fair Oaks, California [Member] Fair Oaks, California [Member] Cameron Park, California [Member] Cameron Park, California [Member] Cameron Park, California [Member] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Core deposits Core Deposits [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Consideration transferred Business Combination, Consideration Transferred Estimated number of shares to be issued in merger transaction (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Number of branches to be acquired Number of Branches Acquired Number of Branches Acquired Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Goodwill Core deposit intangible Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Acquired finite-lived intangible assets useful life Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Cash Payments to Acquire Businesses, Gross Non-impaired loans Business Combination, Acquired Receivable, Fair Value Customer receivables Business Combination, Acquired Receivables, Gross Contractual Amount Core deposit intangible Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Expected Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Retirement Benefits [Abstract] Employee Benefits Compensation and Employee Benefit Plans [Text Block] Banking and Thrift [Abstract] Interest expense recognized on interest-bearing deposits Interest Expense, Domestic Deposits [Abstract] Savings Interest Expense, Savings Deposits Money market Interest Expense, Money Market Deposits NOW accounts Interest Expense, Negotiable Order of Withdrawal (NOW) Deposits Time certificates of deposit Interest Expense Domestic Deposit Liabilities, Certificates of Deposit Total interest expense recognized Interest Expense Domestic Deposit Liabilities Receivables [Abstract] Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Real Estate Real Estate Portfolio Segment [Member] Real Estate Portfolio Segment [Member] Consumer Consumer Portfolio Segment [Member] Commercial and industrial Commercial and Industrial [Member] Commercial and Industrial [Member] Agricultural land and production Agricultural Land and Production [Member] Agricultural land and production [Member] Owner occupied Owner Occupied Real Estate [Member] Owner Occupied Real Estate [Member] Real estate construction and other land loans Real Estate Construction and Other Land Loans [Member] Real Estate Construction and Other Land Loans [Member] Commercial real estate Commercial Real Estate [Member] Agricultural real estate Agricultural Real Estate [Member] Agricultural Real Estate [Member] Other real estate Other Real Estate [Member] Other Real Estate [Member] Equity loans and lines of credit Equity Loans and Lines of Credit [Member] Equity Loans and Lines of Credit [Member] Consumer and installment Consumer and Installment [Member] Consumer and Installment [Member] Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Recorded Investment, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Recorded Investment Upaid Principal Balance, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Cash flows expected to be collected at acquisition Unpaid Principal Balance, With an allowance recorded Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance Total Recorded Investment Total Unpaid Principal Balance Average Recorded Investment, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Interest Income Recognized, With no related allowance recorded Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method Average Recorded Investment, With an allowance recorded Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Interest Income Recognized, With an allowance recorded Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method Average Recorded Investment, Total Impaired Financing Receivable, Average Recorded Investment Interest Income Recognized, Total Impaired Financing Receivable, Interest Income, Accrual Method Forgone interest on nonaccrual loans Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value, Measurements, Recurring [Member] Nonrecurring Fair Value, Measurements, Nonrecurring [Member] Other equity securities Equity Securities [Member] Impaired loans Impaired Financing Receivable [Member] Impaired Financing Receivable [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Other repossessed assets Other Repossessed Assets, Fair Value Disclosure Other Repossessed Assets, Fair Value Disclosure Assets, fair value Assets, Fair Value Disclosure Schedule of Defined Contribution Plans Disclosures [Table] Schedule of Defined Contribution Plans Disclosures [Table] Schedule of Defined Contribution Plans Disclosures [Table] Retirement Plan Name [Axis] Retirement Plan Name [Axis] Retirement Plan Name [Domain] Retirement Plan Name [Domain] 401(k) plan Employee Savings Plan [Member] Employee Savings Plan [Member] Profit sharing plan Profit Sharing [Member] Profit Sharing [Member] Schedule of Defined Contribution Plans Disclosures [Line Items] Schedule of Defined Contribution Plans Disclosures [Line Items] [Line Items] for Schedule of Defined Contribution Plans Disclosures [Table] Requisite service period Defined Contribution Plan Requisite Service Period Defined Contribution Plan Requisite Service Period Percentage vesting annually Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage Employer contribution amount Defined Contribution Plan, Employer Discretionary Contribution Amount Employer matching of employee contributions, percentage Defined Contribution Plan, Employer Matching Contribution, Percent of Match Employer matching contribution, percentage of compensation Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Held-to-Maturity Securities Held-to-maturity Securities, Sales, Excluding Other than Temporary Impairments [Abstract] Proceeds from calls Proceeds from Sale and Maturity of Held-to-maturity Securities Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Balance Sheets Condensed Balance Sheet [Table Text Block] Condensed Statements of Income and Comprehensive Income Condensed Income Statement [Table Text Block] Condensed Statements of Cash Flows Condensed Cash Flow Statement [Table Text Block] Debt Securities, Amortized Cost Equity Securities, Amortized Cost Available-for-sale Equity Securities, Amortized Cost Basis Available-for-sale investment securities, Amortized cost Debt Securities, Estimated Fair Value Available-for-sale Securities, Debt Securities Equity Securities, Estimated Fair Value Available-for-sale Securities, Equity Securities Available-for-sale Securities, Gross Unrealized Gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Gross Unrealized Losses Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-sale Securities, Gross Unrealized Gains Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax Available-for-sale Securities, Gross Unrealized Losses Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax Less than 12 Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 12 Months or More, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Total Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Less than 12 Months, Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 12 Months or More, Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Total Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Shareholders' Equity Stockholders' Equity Note Disclosure and Earnings Per Share [Text Block] Stockholders' Equity Note Disclosure and Earnings Per Share [Text Block] Schedule of Deferred Compensation Arrangement with Individual, Postretirement Benefits [Table] Schedule of Deferred Compensation Arrangement with Individual, Postretirement Benefits [Table] Salary Continuation [Member] Salary Continuation [Member] Salary Continuation [Member] Service 1st Bank Service 1st Bank [Member] Service 1st Bank [Member] Title of Individual [Axis] Title of Individual [Axis] Title of Individual with Relationship to Entity [Domain] Relationship to Entity [Domain] Certain Key Executives [Member] Certain Key Executives [Member] Certain Key Executives [Member] Postretirement Benefits, Type of Deferred Compensation [Axis] Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Axis] Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain] Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain] Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] Contractual term Deferred Compensation Arrangement with Individual, Contractual Term, Maximum Deferred Compensation Arrangement with Individual, Contractual Term, Maximum Salary continuation plans, expense for period Deferred Compensation Arrangement with Individual, Compensation Expense Total liability Deferred Compensation Arrangement with Individual, Recorded Liability Cash surrender value of life insurance Cash Surrender Value of Life Insurance Annual tax free interest rate on life insurance policies Annual Tax Free Interest Rate On Life Insurance Policies Annual Tax Free Interest Rate On Life Insurance Policies Schedule of Financing Receivables Past Due [Table] Schedule of Financing Receivables Past Due [Table] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Axis] Financing Receivables, Period Past Due [Domain] Financing Receivables, Period Past Due [Domain] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 30 to 59 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, 60 to 89 Days Past Due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivables, Equal to Greater than 90 Days Past Due [Member] Financing Receivable, Recorded Investment, Past Due [Line Items] Financing Receivable, Recorded Investment, Past Due [Line Items] Past Due Financing Receivable, Recorded Investment, Past Due Current Financing Receivable, Recorded Investment, Current Loans Financing Receivable, Gross Recorded Investment Greater Than 90 Days Accruing Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing Non-accrual Financing Receivable, Recorded Investment, Nonaccrual Status Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Parent Company Parent Company [Member] Condensed Balance Sheet Statement [Line Items] Condensed Balance Sheet Statement [Line Items] [Line Items] for Disclosure of information about condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations. ASSETS Assets [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Investment in Bank subsidiary Investment in Bank subsidiary Investment in Bank subsidiary Other assets Other Assets Total assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Junior subordinated debentures due to subsidiary grantor trust Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust Other liabilities Other Liabilities Total liabilities Liabilities Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, Series C Preferred Stock, Value, Issued Common stock Common Stock, Value, Issued Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive (loss) income, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders' equity Total liabilities and shareholders' equity Liabilities and Equity Schedule of compliance with regulatory capital requirements Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] Schedule of computation of basic and diluted earnings per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Bank Premises and Equipment Property, Plant and Equipment Disclosure [Text Block] Loans and Allowance for Credit Losses Allowance for Credit Losses [Text Block] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] California CALIFORNIA Federal Internal Revenue Service (IRS) [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Operating loss carryforwards Operating Loss Carryforwards Alternative minimum tax credit Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax Additions based on tax positions related to prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Remeasurement resulting from Tax Act Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit) Excess tax benefit from exercise of stock options and vesting of restricted shares Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount Federal income tax, at statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent State taxes, net of Federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Tax exempt investment security income, net Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Bank owned life insurance, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Life Insurance, Percent Compensation - Stock Compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent Re-measurement resulting from Tax Act Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Change in uncertain tax positions Effective Income Tax Rate Reconciliation, Tax Contingency, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective tax rate Effective Income Tax Rate Reconciliation, Percent Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Schedule of Federal Home Loan Bank Advances, by Branch of FHLB Bank [Table] Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank Branch [Axis] Federal Home Loan Bank, Advances, Branch of FHLB Bank, State [Domain] Federal Home Loan Bank Branch [Domain] San Francisco Branch San Fransisco Branch [Member] San Fransisco Branch [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Federal Home Loan Bank Advances Federal Home Loan Bank Advances [Member] Federal Reserve Bank Advances Federal Reserve Bank Advances [Member] Borrowing Arrangements Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] Advances from FHLB Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances Loans pledged as collateral Loans Pledged as Collateral Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Investments securing FHLB advances, amortized cost Investments securing FLHB advances, market value Maximum borrowing capacity on lines of credit Line of Credit Facility, Maximum Borrowing Capacity Federal funds purchased Federal Funds Purchased Line of credit, current Line of Credit, Current Statement of Comprehensive Income [Abstract] Other Comprehensive Income (Loss): Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Unrealized gains (losses) on securities: Unrealized Gain (Loss) on Investments [Abstract] Unrealized holdings gains (losses) arising during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Less: reclassification for net gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Less: reclassification for other-than-temporary impairment loss included in net income Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax Transfer of investment securities from held-to-maturity to available-for-sale Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, before Tax Amortization of net unrealized gains transferred Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Amortization, before Tax Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Amortization, before Tax Other comprehensive income (loss), before tax Other Comprehensive Income (Loss), before Tax Tax (expense) benefit related to items of other comprehensive income Other Comprehensive Income (Loss), Tax Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Income Taxes Income Tax Disclosure [Text Block] Aggregate maturities of time deposits: Maturities of Time Deposits [Abstract] 2018 Time Deposit Maturities, Next Twelve Months 2019 Time Deposit Maturities, Year Two 2020 Time Deposit Maturities, Year Three 2021 Time Deposit Maturities, Year Four 2022 Time Deposit Maturities, Year Five Thereafter Time Deposit Maturities, after Year Five Total time deposits Time Deposits Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Net increase in deferred loan costs Amortization of Deferred Loan Origination Fees, Net Depreciation Depreciation, Nonproduction Accretion Accretion (Amortization) of Discounts and Premiums, Investments Amortization Amortization Stock-based compensation Share-based Compensation Excess tax benefit from exercise of stock options Excess Tax Benefit from Share-based Compensation, Operating Activities Net realized gains on sales and calls of available-for-sale investment securities Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments Net realized gains on sales or calls of held-to-maturity investment securities Held-to-maturity Securities, Sold Security, Realized Gain (Loss), Excluding Other than Temporary Impairments Net loss on sale and disposal of equipment Gain (Loss) on Disposition of Property Plant Equipment Net gain on sale of other real estate owned Gains (Losses) on Sales of Other Real Estate Increase in bank owned life insurance, net of expenses Life Insurance, Corporate or Bank Owned, Change in Value Net gain on bank owned life insurance Gain (Loss) on Bank Owned Life Insurance Gain (Loss) on Bank Owned Life Insurance Net (increase) decrease in accrued interest receivable and other assets Increase (Decrease) in Accrued Interest Receivable and Other Operating Assets, Net The net change during the reporting period in the amount due from borrowers for interest payments and other operating assets not otherwise defined in the taxonomy. Net increase (decrease) in accrued interest payable and other liabilities Increase (Decrease) in Interest Payable and Other Operating Liabilities, Net This element represents net increase or decrease in accrued interest payable and other liabilities not otherwise defined in the taxonomy. Benefit (provision) for deferred income taxes Increase (Decrease) in Deferred Income Taxes Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash flows used in investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Net cash and cash equivalents acquired in acquisition Cash Acquired from Acquisition Purchases of available-for-sale investment securities Payments to Acquire Available-for-sale Securities Proceeds from sales or calls of available-for-sale investment securities Proceeds from Sale of Available-for-sale Securities Proceeds from sales or calls of held-to-maturity investment securities Proceeds from maturity and principal repayment of available-for-sale investment securities Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Net increase in loans Payments for (Proceeds from) Loans and Leases Proceeds from sale of other real estate owned Proceeds from Sale of Other Real Estate Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Purchases of bank owned life insurance Payment to Acquire Life Insurance Policy, Investing Activities FHLB stock purchased Payments for (Proceeds from) Federal Home Loan Bank Stock Proceeds from bank owned life insurance Proceeds from Life Insurance Policy Proceeds from sale of premises and equipment Proceeds from Sale of Property, Plant, and Equipment Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows From Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Net increase in demand, interest-bearing and savings deposits Net Increase (Decrease) in Demand Interest Bearing and Savings Deposits The net cash inflow (outflow) in the total of all interest bearing deposit accounts, classified as cash flows from financing activities. Net decrease in time deposits Increase (Decrease) in Time Deposits Repayments of short-term borrowings to Federal Home Loan Bank Repayments of Federal Home Loan Bank Borrowings Proceeds of borrowings from other financial institutions Proceeds from Deposits with Other Institutions Repayments of borrowings from other financial institutions Repayments of Other Debt Proceeds from stock issued under employee stock purchase plan Proceeds from Stock Plans Excess tax benefit from exercise of stock options Excess Tax Benefit from Share-based Compensation, Financing Activities Cash dividend payments on common stock Payments of Ordinary Dividends, Common Stock Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Increase (decrease) in cash and cash equivalents Net Cash Provided by (Used in) Continuing Operations CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR CASH AND CASH EQUIVALENTS AT END OF YEAR SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Cash paid during the year for: Cash Paid [Abstract] Interest Interest Paid Income taxes Income Taxes Paid, Net Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Transfer of securities from held-to-maturity to available-for-sale Transfer to Investments Unrealized gain on transfer of securities from held-to-maturity to available-for-sale Unrealized Gain (Loss) on Securities Transferred to Investments Unrealized Gain (Loss) on Securities Transferred to Investments Foreclosure of loan collateral and recognition of other real estate owned Real Estate Owned, Transfer from Real Estate Owned Transfer of loans to other assets Transfer of Loans to Other Assets Transfer of Loans to Other Assets Assumption of debt related to foreclosure of other real estate owned Liabilities Assumed Common stock issued in acquisitions Stock Issued Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Land [Member] Buildings and improvements Building and Building Improvements [Member] Furniture, fixtures and equipment Furniture, Fixtures And Equipment [Member] Furniture, Fixtures And Equipment [Member] Leasehold improvements Leasehold Improvements [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Bank premises and equipment, gross Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Bank premises and equipment, net Property, Plant and Equipment, Net Depreciation and amortization Depreciation, Depletion and Amortization Rental expense for period Operating Leases, Rent Expense, Net 2018 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2019 Operating Leases, Future Minimum Payments, Due in Two Years 2020 Operating Leases, Future Minimum Payments, Due in Three Years 2021 Operating Leases, Future Minimum Payments, Due in Four Years 2022 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total future minimum lease payments Operating Leases, Future Minimum Payments Due Deposits by type: Deposits, by Type [Abstract] Savings Deposits, Savings Deposits Money market Deposits, Money Market Deposits NOW accounts Deposits, Negotiable Order of Withdrawal (NOW) Time, $250,000 or more Time Deposits, $100,000 or More Time, under $250,000 Time Deposits, Less than $100,000 Total deposit liabilities Interest-bearing Deposit Liabilities, Domestic Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Credit Quality Indicator [Axis] Internal Credit Assessment [Axis] Financing Receivable, by Credit Quality Indicator [Domain] Internal Credit Assessment [Domain] Pass Pass [Member] Special Mention Special Mention [Member] Substandard Substandard [Member] Doubtful Doubtful [Member] Financing Receivable, Recorded Investment Financing Receivable, Recorded Investment [Line Items] Loans Document and Entity Information [Abstract] -- None. No documentation exists for this element. -- Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Public Float Entity Public Float Schedule of Goodwill [Table] Schedule of Goodwill [Table] Visalia Community Bank Visalia Community Bank [Member] Sierra Vista Bank [Member] Bank of Madera County Bank of Madera County [Member] Bank of Madera County [Member] Goodwill [Line Items] Goodwill [Line Items] Measurement adjustment, increase to goodwill Goodwill, Purchase Accounting Adjustments Acquired finite-lived intangible assets Finite-lived Intangible Assets Acquired Estimated useful life of intangible asset Finite-Lived Intangible Asset, Useful Life Core deposit intangibles Intangible assets, accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits, by Title of Individual and by Type of Deferred Compensation [Table] Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits, by Title of Individual and by Type of Deferred Compensation [Table] Deferred Bonus and Profit Sharing Plan, Type of Deferred Compensation [Axis] Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain] Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain] Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] Director [Member] Director [Member] Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items] Interest rate on deferred amounts Deferred Compensation Interest Rate on Deferred Amounts Deferred Compensation Interest Rate on Deferred Amounts Net deferrals included in accrued interest payable and other liabilities Maximum deferment of compensation each year Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Real Estate and Consumer Real Estate and Consumer Portfolio Segments [Member] Real Estate and Consumer Portfolio Segments [Member] Financing Receivable, Modifications [Line Items] Financing Receivable, Modifications [Line Items] Reserves specific to modified loans Financing Receivable, Modifications, Related Allowance Financing Receivable, Modifications, Related Allowance Additional commitments to lend Loans and Leases Receivable, Impaired, Commitment to Lend Number of Loans Financing Receivable, Modifications, Number of Contracts Pre-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Principal Modification Financing Receivable, Modifications, Amount of Principal Modifications Made During Period Financing Receivable, Modifications, Amount of Principal Modifications Made During Period Post Modification Outstanding Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Outstanding Recorded Investment Financing Receivable, Modifications, Recorded Investment Defaults on troubled debt restructurings Financing Receivable, Modifications, Subsequent Defaults During Period, Number of Contracts Financing Receivable, Modifications, Subsequent Defaults During Period, Number of Contracts Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Balance, beginning of year Unrecognized Tax Benefits Reductions for tax positions of prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Balance, end of year Sierra Vista Bank and Folsom Lake Bank [Member] Sierra Vista Bank and Folsom Lake Bank [Member] Sierra Vista Bank and Folsom Lake Bank [Member] Net interest income Business Acquisition, Pro Forma Net Interest Income Business Acquisition, Pro Forma Net Interest Income Provision for (reversal of) credit losses Business Acquisition, Pro Forma Provision For (Reversal Of) Credit Losses Business Acquisition, Pro Forma Provision For (Reversal Of) Credit Losses Non-interest income Business Acquisition, Pro Forma Non-Interest Income Business Acquisition, Pro Forma Non-Interest Income Non-interest expense Business Acquisition, Pro Forma Non-Interest Expense Business Acquisition, Pro Forma Non-Interest Expense Income before provision for income taxes Business Acquisition, Pro Forma Income Before Income Taxes Business Acquisition, Pro Forma Income Before Income Taxes Provision for income taxes Business Acquisition, Pro Forma Income Tax Expense Benefit Business Acquisition, Pro Forma Income Tax Expense Benefit Net income Business Acquisition, Pro Forma Net Income (Loss) Net income available to common shareholders Business Acquisitions, Pro Forma Net Income (Loss) Available To Common Stockholders, Basic Business Acquisitions, Pro Forma Net Income (Loss) Available To Common Stockholders, Basic Basic earnings per common share (in dollars per share) Business Acquisition, Pro Forma Earnings Per Share, Basic Diluted earnings per common share (in dollars per share) Business Acquisition, Pro Forma Earnings Per Share, Diluted Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested outstanding shares at beginning of period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested outstanding shares at end of period (shares) Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Nonvested outstanding shares at beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Nonvested outstanding shares at end of period (in dollars per share) Schedule of Off-balance Sheet Commitments [Table] Schedule of Off-balance Sheet Commitments [Table] Schedule of Off-balance Sheet Commitments [Table] Real estate related Real estate related [Member] Real estate related [Member] Commercial and Real estate related Commercial and Real estate related [Member] Commercial and Real estate related [Member] Financial Instrument [Axis] Financial Instrument [Axis] Types of Financial Instruments [Domain] Financial Instruments [Domain] Undisbursed lines of credit Unused lines of Credit [Member] Standby letters of credit and financial guarantees Standby Letters of Credit [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Probable loan loss experience on unfunded obligations Probable loan loss experience on unfunded obligations [Member] Probable loan loss experience on unfunded obligations [Member] Commitments and Contingencies Off-balance Sheet Commitments [Line Items] Off-balance Sheet Commitments [Line Items] Federal reserve deposit requirement reserve amount Federal Reserve Deposit Requirement, Reserve Amount Federal Reserve Deposit Requirement, Reserve Amount Uninsured deposits Cash, Uninsured Amount Commitments to extend credit Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability Percentage of loan commitments Percentage Of Loan Commitments Percentage Of Loan Commitments Maximum loan to value ratio Maximum loan to value ratio Maximum loan to value ratio Loss Contingency, Estimate of Possible Loss Loss Contingency, Estimate of Possible Loss % of Total Loans Loans and Leases Receivable, Percentage of Gross Loans Loans and Leases Receivable, Percentage of Gross Loans Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Financing Receivable, Allowance for Credit Losses [Table] Financing Receivable, Allowance for Credit Losses [Line Items] Financing Receivable, Allowance for Credit Losses [Line Items] Ending balance: individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Ending balance: collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Condensed Income Statement [Table] Condensed Income Statement [Table] Condensed Income Statement [Line Items] Condensed Income Statement [Line Items] [Line Items] for Disclosure of information about condensed income statement including, but not limited to, income statements of consolidated entities and consolidation eliminations. Income: Revenues [Abstract] Dividends declared by Subsidiary - eliminated in consolidation Dividends Declared By Subsidiary Dividends Declared By Subsidiary Other income Other Income Total income Revenues Expenses: Costs and Expenses [Abstract] Professional fees Other expenses Other Expenses Total expenses Operating Expenses Income before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Equity in undistributed net income of Subsidiary Income (Loss) from Subsidiaries, before Tax Benefit from income taxes Comprehensive income Summary of Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Within one year, amortized cost Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Within one year, estimated fair value Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value After one year through five years, amortized cost Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis After one year through five years, estimated fair value Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value After five years through ten years, amortized cost Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis After five years through ten years, estimated fair value Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value After ten years, amortized cost Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis After ten years, estimated fair value Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Total securities with single maturity date, amortized cost Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis Total securities with single maturity date, estimated fair value Available-for-sale Securities, Debt Maturities, Single Maturity Date Investment securities not due at a single maturity date, amortized cost Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Investment securities not due at a single maturity date, estimated fair value Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Estimated Fair Value of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Fair Value of Assets on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value of Assets on a Non-recurring Basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair Value Measurements Financial Instruments Disclosure [Text Block] Related Party Transactions [Abstract] Summary of aggregate activity involving related party borrowers Summary of Aggregate Activity Involving Related Parties [Table Text Block] Summary of Aggregate Activity Involving Related Parties [Table Text Block] Loans to Related Parties Related Party Transactions Disclosure [Text Block] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Premises Building [Member] Leasehold improvements, furniture, fixtures and equipment Leasehold Improvements, Furniture, Fixtures And Equipment [Member] Leasehold Improvements, Furniture, Fixtures And Equipment [Member] New Accounting Pronouncement, Early Adoption [Axis] New Accounting Pronouncement, Early Adoption [Axis] New Accounting Principles, Early Adoption [Domain] New Accounting Principles, Early Adoption [Domain] Adjustments for New Accounting Principle, Early Adoption [Member] Adjustments for New Accounting Principle, Early Adoption [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2018-02 [Member] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] [Line Items] for Significant Accounting Policies [Table] Number of full service offices Number of Full Service Offices Number of Full Service Offices Real Estate - owner-occupied percentage minimum for collateral Commercial Real Estate Owner Occupied Percentage For Collateral Commercial Real Estate Owner Occupied Percentage For Collateral